[Info-vax] New filesystem mentioned

Chris Scheers chris at applied-synergy.com
Tue May 14 16:52:50 EDT 2019


Bob Koehler wrote:
> In article <qbco24$r22$2 at dont-email.me>, Dave Froble <davef at tsoft-inc.com> writes:
>> Not that I'm an expert on VMS clusters, but it has been my impression 
>> that the OS did all the work.  But what do I know?
> 
>    The file system is very much part of the OS.  If it's going to work
>    in VMSclusters, it must support VMSclusters.

There seems to be some heavily blinkered, all-or-nothing thought going 
on in this discussion.

There were file systems in VMS before clusters and those file systems 
still work.

For example, it should be possible to side step the DLM by doing a 
local, ACP based file system and MSCP serving the results to the cluster.

Obviously, this looses the advantages of being cluster aware, but it 
does provide the advantages of the file system without needing to go 
down the DLM rabbit hole.

So the real question is: What are the advantages of being cluster aware 
vs. the advantages of the file system?

Having both is best, but is there a viable compromise that is useful?

I think that being useful, even with limitations, is a whole lot better 
than having nothing.

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Chris Scheers, Applied Synergy, Inc.

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